CN102825430A - Welding method for welding steel pipe spirally - Google Patents
Welding method for welding steel pipe spirally Download PDFInfo
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- CN102825430A CN102825430A CN 201210330568 CN201210330568A CN102825430A CN 102825430 A CN102825430 A CN 102825430A CN 201210330568 CN201210330568 CN 201210330568 CN 201210330568 A CN201210330568 A CN 201210330568A CN 102825430 A CN102825430 A CN 102825430A
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Abstract
The invention discloses a welding method for welding a steel pipe spirally. The welding method comprises the steps of: uncoiling a plate coil, flattening, milling edges, forming, welding and tracking detection. The welding method is characterized in that firstly the plate coil is uncoiled and flattened into a steel belt, and edge-milled into an X-shaped groove, the steel belt is conveyed to a spiral welded steel pipe former continuously according to the spiral angle; the formed steel-belt spiral steel pipe adopts a process with combination of internal and external submerged-arc welding and double-wire serial electric-arc and submerged-arc automatic welding, and then pre-internal welding, refined internal welding and external welding are carried out; a tracking sensor is adopted to detect the lowest point of a V-shaped groove of the formed seam at a distance before internal welding of the groove welded of the steel pipe to be welded to realize automatic tracking of refined welding and internal welding. The welding method disclosed by the invention has the advantages that the process with combination of internal and external submerged-arc welding and double-wire serial electric-arc and submerged-arc automatic welding and the tracking detection system is adopted, the welding deviation phenomenon and the fluctuation of welding offset can be avoided, the workload for correction and adjustment is reduced, the welding process is stable and reliable and the quality of the welding seam is ensured.
Description
Technical field
The present invention relates to rolled steel plate by certain curvature helical buckling after along the slit welded still pipe preparation method of steel plate overlap joint.
Background technology
The spiral welding steel pipe is undertaken rolled steel plate to weld together along the slit that steel plate overlaps behind the helical buckling by certain radius of curvature by the curling welding fabrication of ribbon spiral shape, and its spiral seam adopts two-sided automatic submerged arc welding method welding.On spiral welding steel pipe unit production line; Pull out and steel band behind leveling affects down in the steel band delivery roller from the raw steel roll coil of strip; Continuously deliver in the former by helical angle, under three row's wheels effect of former, the steel band bending is rolled into helical form; Arc welding gun head is aimed at spiral jointing line welding all the time, does at steel pipe
Realized the spiral seam welding in the helical form rotation process.Still there are a lot of problems in the present mode of production when the spiral welding steel pipe of production high strength, heavy wall; Mainly show: along with the intensity of steel and the increase of wall thickness; Steel band is in former, and it is insufficient especially to send the distortion of limit one side strip edge edge, and that generally adopts at present simultaneously cuts the following flange phenomenon that limit technology also can cause edges of boards; When the moulding interlock, occur being in a pout, becoming defectives such as groove part is tight inside but loose outside, misalignment easily, even can cause critical defects such as weld seam micro-crack; Problems such as the crescent moon that roll bending self exists is curved have influenced the forming stability of steel pipe highlightedly, and the girth of steel pipe and ovality are changed greatly, can not effectively guarantee the stability of steel pipe appearance and size, construct for the steel pipe field joint and affect; In addition, with the intensity of steel and the increase of wall thickness, make welding process become difficult more, tissue and performance how to control weld seam also are key issues that needs solution.
Summary of the invention
The object of the invention is exactly the deficiency that exists to above-mentioned prior art, and a kind of welding method of spiral welding steel pipe is provided, and adopts the spiral welding steel pipe of this method weldering system, and the inside and outside quality of steel pipe seam is high, reduces welder's labour intensity.
The objective of the invention is to realize like this, the welding method of spiral welding steel pipe comprises coiled sheet uncoiling, leveling, mills the limit, moulding, welding and tracking detect; It is characterized in that; Earlier coiled sheet uncoiling, leveling are become steel band, mill after the limit becomes X type groove, steel band is continuously delivered to spiral welding steel pipe former by helical angle, the ribbon spiral steel pipe of moulding adopts inside and outside submerged arc welding mariages tandem electric arc Lincoln weld technology; Weldering in carrying out in advance, smart interior weldering and outside weld; The employing tracking transducer detects and welds the astute and able interior weldering of one-tenth groove part double V-groove minimum point realization of the preceding a distance of groove in the steel pipe to be welded from motion tracking, makes the tracking system test point become the groove part center consistent with steel pipe to be welded all the time, and displacement transducer is controlled outside vision sensor and the same moved further of interior welding gun; Make the positive smart interior welding line of weldering; The said Bian Weishuan of milling at the limit, and it is curved to mill away edges of boards burr, crescent moon earlier, mills X type groove again; In the said essence weldering weld distance in advance in the weldering weld at least in latter two pitch, the outside weld weld in smart the weldering weld with preparatory in weld between the weld.
The present invention adopts inside and outside submerged arc welding mariages tandem electric arc Lincoln weld technology and follows the tracks of detection system, can avoid occurring welding the fluctuation of inclined to one side phenomenon and welding offset, reduces correction and regulates workload, makes welding process reliable and stable, guarantees weldquality.In advance interior welding line is taked not fill and lead up bevel for welding and is made smart interior welding line reinforcement be unlikely to too high.The distance of weldering place at least two pitch of weldering place in advance has long time and bigger space interval in smart, can fully clear up in advance in the weldering welding slag, thereby make smart in weldering do not produce slag inclusion.Welding line also can take to fill and lead up the method for bevel for welding in advance; But need bevelling outfit to be set at the position of spiral welding steel pipe bearing of trend about pitch of weldering place in said I place is promptly preparatory; Spiral weld is carried out groove reprocessing; The welding line place cuts out groove in advance, so can more effectively control smart interior welding line reinforcement.
The specific embodiment
The welding method of spiral welding steel pipe carries out coiled sheet to mill the limit behind uncoiling, the leveling earlier, and panel edges is milled away 10～15mm earlier, mills into X type groove again.Steel band is continuously delivered to spiral welding steel pipe former by the spiral angle of design; The spiral seam that the weldering welding gun forms steel band in the initial position that ribbon spiral becomes to manage is provided with in advance welds in carrying out in advance; At spiral welding steel pipe bearing of trend the outside weld welding gun is set from the position of the pitch in said initial position the ribbon spiral seam is carried out outside weld, spiral welding steel pipe bearing of trend from the position of two pitch in said initial position be provided with smart in the weldering welding gun ribbon spiral seam is carried out welding in the essence.Adopt inside and outside submerged arc welding mariages tandem electric arc Lincoln weld technology; For guaranteeing that the tracking system test point becomes the groove part center consistent with steel pipe to be welded all the time; Adopt tracking transducer to detect and become groove part double V-groove minimum point to realize astute and able interior weldering from motion tracking in the steel pipe to be welded outside the preceding a distance of weldering groove, outside vision sensor slide unit and interior welding gun slide block adopt displacement transducer control with moved further.
Claims (1)
1. the welding method of spiral welding steel pipe comprises coiled sheet uncoiling, leveling, mills the limit, moulding, welding and tracking detect, and it is characterized in that; Earlier coiled sheet uncoiling, leveling are become steel band, mill after the limit becomes X type groove, steel band is continuously delivered to spiral welding steel pipe former by helical angle, the ribbon spiral steel pipe of moulding adopts inside and outside submerged arc welding mariages tandem electric arc Lincoln weld technology; Weldering in carrying out in advance, smart interior weldering and outside weld; The employing tracking transducer detects and welds the astute and able interior weldering of one-tenth groove part double V-groove minimum point realization of the preceding a distance of groove in the steel pipe to be welded from motion tracking, makes the tracking system test point become the groove part center consistent with steel pipe to be welded all the time, and displacement transducer is controlled outside vision sensor and the same moved further of interior welding gun; Make the positive smart interior welding line of weldering; The said Bian Weishuan of milling at the limit, and it is curved to mill away edges of boards burr, crescent moon earlier, mills X type groove again; In the said essence weldering weld distance in advance in the weldering weld at least in latter two pitch, the outside weld weld in smart the weldering weld with preparatory in weld between the weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210330568 CN102825430A (en) | 2012-09-10 | 2012-09-10 | Welding method for welding steel pipe spirally |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210330568 CN102825430A (en) | 2012-09-10 | 2012-09-10 | Welding method for welding steel pipe spirally |
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| CN102825430A true CN102825430A (en) | 2012-12-19 |
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| CN 201210330568 Pending CN102825430A (en) | 2012-09-10 | 2012-09-10 | Welding method for welding steel pipe spirally |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192234A (en) * | 2013-04-01 | 2013-07-10 | 宝鸡石油钢管有限责任公司 | Spiral molded large-deformation-resistant submerged-arc welding pipe and manufacture method thereof |
| CN103831509A (en) * | 2014-03-15 | 2014-06-04 | 宝鸡石油钢管有限责任公司 | Spiral submerged arc steel tube welding procedure qualification method |
| CN104384678A (en) * | 2014-11-14 | 2015-03-04 | 番禺珠江钢管（连云港）有限公司 | Novel welding technology of SSAW (Spirally Submerged Arc Welding) pipe |
| CN104741868A (en) * | 2013-12-27 | 2015-07-01 | 晋西铁路车辆有限责任公司 | Method for manufacturing tank cylinder of tank car |
| CN106041429A (en) * | 2016-07-04 | 2016-10-26 | 阳泉煤业集团华越机械有限公司 | Method for manufacturing double-helix drum of belt conveyer |
| CN109176041A (en) * | 2018-11-14 | 2019-01-11 | 广东昌华海利科技有限公司 | Unit is packed in stainless-steel pipe automated production |
| CN114535939A (en) * | 2022-03-22 | 2022-05-27 | 湖南胜利湘钢钢管有限公司 | Method for manufacturing longitudinal submerged arc welded pipe |
-
2012
- 2012-09-10 CN CN 201210330568 patent/CN102825430A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192234A (en) * | 2013-04-01 | 2013-07-10 | 宝鸡石油钢管有限责任公司 | Spiral molded large-deformation-resistant submerged-arc welding pipe and manufacture method thereof |
| CN103192234B (en) * | 2013-04-01 | 2015-07-15 | 宝鸡石油钢管有限责任公司 | Spiral molded large-deformation-resistant submerged-arc welding pipe and manufacture method thereof |
| CN104741868A (en) * | 2013-12-27 | 2015-07-01 | 晋西铁路车辆有限责任公司 | Method for manufacturing tank cylinder of tank car |
| CN103831509A (en) * | 2014-03-15 | 2014-06-04 | 宝鸡石油钢管有限责任公司 | Spiral submerged arc steel tube welding procedure qualification method |
| CN103831509B (en) * | 2014-03-15 | 2016-11-02 | 宝鸡石油钢管有限责任公司 | A kind of spiral submerged arc steel-pipe welding procedure qualification method |
| CN104384678A (en) * | 2014-11-14 | 2015-03-04 | 番禺珠江钢管（连云港）有限公司 | Novel welding technology of SSAW (Spirally Submerged Arc Welding) pipe |
| CN106041429A (en) * | 2016-07-04 | 2016-10-26 | 阳泉煤业集团华越机械有限公司 | Method for manufacturing double-helix drum of belt conveyer |
| CN106041429B (en) * | 2016-07-04 | 2018-03-13 | 阳泉煤业集团华越机械有限公司 | A kind of ribbon conveyer double-screw drum preparation method |
| CN109176041A (en) * | 2018-11-14 | 2019-01-11 | 广东昌华海利科技有限公司 | Unit is packed in stainless-steel pipe automated production |
| CN109176041B (en) * | 2018-11-14 | 2023-12-05 | 广东昌华海利科技有限公司 | Automatic production and packaging unit for stainless steel pipes |
| CN114535939A (en) * | 2022-03-22 | 2022-05-27 | 湖南胜利湘钢钢管有限公司 | Method for manufacturing longitudinal submerged arc welded pipe |
| CN114535939B (en) * | 2022-03-22 | 2023-02-28 | 湖南胜利湘钢钢管有限公司 | Method for manufacturing longitudinal submerged arc welded pipe |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121219 |